Wouter,
No disrespect but the kind of aggression you describe has no place at a beer can race. Unfortunately it seems to slip in there anyway. Local fleet regattas where there is no money involved should be friendly non-aggressive events. Yes, competitive but friendly. Pushing the point of who is right at every turn takes the fun out of it, as I see it. If there were a,b & c fleets then I would sail in C fleet and not have to deal with the aggression and skill of A fleet teams. I'm sure A fleet sailors would prefer that as well.